無線寬頻網路（Mobile Internet Broadband Network）的出現對於無線通訊產業、傳播媒體產業與影音內容產業產生了相當程度的影響，而數位化的科技發展更帶來通訊、傳播及平面媒體產業融合的可能性，無線寬頻影音串流（Mobile Internet Video Streaming）是一架構在此無線通訊媒體匯流後的新產物，透過觀察和分析它的演進發展，可以說明和解釋網路新媒體匯流造成傳統影音產業價值鏈的改變。 吾人將以無線通訊之影音播放技術之演進與發展，以及相對最先發生變化之影音產業經營環境，產生之影響，做產業價值鏈分析研究，進而了解產業經營環境之改變，新的價值創造流程及技術平台的關聯性。並藉由日本NTT DOCOMO之經驗，及對其供應商之觀察，了解台灣產業發展之可能趨勢，及策略建議藍圖。 本研究採P.W. Bane、S.P. Bradley & D.J. Collis (1998)三人提出之寬頻產業五層模式作為分析工具。五層模式分為內容(content)、包裝(package)、傳輸網路(transmission)、操作(manipulation) 及終端設備(terminal)五層架構。主要目的為以整體網路頻寬及技術演進的觀點進行分析五層間價值消長之關係，及整體網路之價值之改變。 我們發現在新的技術導入既有影音市場，由於網路之雙向特性，會產生網路效應及網路外部性，這些地方將產生新的價值所在，而擁有網路外部性的影音操作平台可獲得較高的價值。完整而消費者導向的影音操作平台，將首先累積產業之價值所在，影音操作平台的擁有者將成為產業的領導者，最終將成為標準的制定者。 影音內容的價值獲得來自網路外部性是經由更多人與內容來源(內容提供者)互動，造成下一次消費或其他使用者的外部性以及生產外部性，這樣的外部性是由虛擬連結產生．價值聚集於內容包裝層。 無線寬頻影音操作平台是服務成功的關鍵，有效的整合價值鏈及應用是必須在產業發展前完成，而完整的影音操作平台包含：內容製作壓縮平台、串流平台、訊息平台、及手機之用戶播放平台。 我們發現，新的技術導入市場，需要事先將價值鏈重新定義，整合出可行之新的商業模式，再依據新的價值鏈，新的服務流程去整合新的操作平台，投入服務後，由於是消費者導向的服務設計，可以降低消費者對新科技及新服務的學習門檻及進入障礙，而獲得市場認同。 / “Unlimited boundary & Ubiquitous content” Because of the improving the bandwidth & compression technology of mobile Internet, there are a very extremely industrial convergency in communication, broadcasting, & video audio content industry. There are several new technology including streaming, MPEG, multi media message, 3G which push the whole world going to a new Ubiquitous environment & totally change the old value chain of video audio industry, but we still have no ideal where it should go & what will happen next. We will try to research the technical evolution of video broadcasting which really influence our movie, TV industry. It will change the customer behavior of watching TV, or going to the movie. We especially want to find out where is the new value in the mobile Internet multi media industry. We will use the 5 liars analysis model of broadband industry (P.W. Bane、S.P. Bradley & D.J. Collis (1998))as our basic methodology to find out how the three vertical industries became a new 5 horizontal industries, which are content, package, transmission, manipulation, & terminal. We also want to know how they work internally & externally. We find that the video audio manipulation platform will become the key solution for this value chain, because of its network externality & network effect. The content providers also very important to provide the quality of contents to service the end customers. How to consolidate a new valuable services process & user friendly interface is the big issue here for whom will invest a large of money to creat the new mobile internet portal & new audio vedio manipulation platform. They must think not only the user interface of handset, but also the mechanism of profit sharing between these different providers who never work together in the history.

人類慾望無窮而資源有限，所以如何將資源做最有效的使用一直是經濟學所追求的課題。有關效率的規範分析中，巴瑞圖最適（Pareto optimality）為接受度最高的準則。基於巴瑞圖效率的觀點，不論是營利組織或非營利組織其經營之基本理念皆是希望以最少的投入獲得最大的產出，因此衡量投入與產出間之相對表現即為效率的評估。非營利組織及公共部門因為有許多產出、投入不易量化，故其效率不易評定。此一情況一直到DEA（Data Envelopment Analysis；資料包絡分析法）發展才逐漸改善。另外，有關DEA的運用幾乎都集中在個別決策單位的效率衡量，將之應用在衡量總體經濟的表現上非常少見。所以論文第肆章是按傳統方式以DEA衡量我國地方政府的效率並分析造成效率差異的原因，第參章則將DEA的概念應用於經濟成長上，探討使經濟成長達到極大化之租稅負擔及租稅結構。又效率的追求為經濟學的主軸，但中央政府的效率目標與地方政府並不相同，由於目標不同，因此彼此所訂的租稅政策亦不相同。本文第伍章試圖提出一理論模型說明中央政府在面對異質地區的垂直外部性下如何有效率的訂定其租稅政策。 / The human desires are infinite but resources are scarce. Using resources effectively is the topic of the economics. In efficient analyses, the Pareto optimality is the highest criterion to accept. Based on Pareto efficiency, the basic idea is to obtain the most outputs by the least inputs. Therefore the efficiency measurement is to calculate the relative performance of inputs and outputs. The nonprofit organization and the public agencies have many outputs and inputs not easy to be quantified; hence, their efficiency is not easy to evaluate. This phenomenon doesn’t improve until DEA (Data Envelopment Analysis) was developed. However, the application of DEA concentrates nearly on the efficiency measurement of individual policy-making unit; the application is be rarely used in measuring the performance of the macro-economy. Chapter 4 of this dissertation measures and explains the variation in cost efficiency of the local governments in Taiwan area. Chapter 3 deals with the application the DEA to economic growth, estimating a combination of the tax burden(the ratio of tax revenue to GDP）and the tax structure(the ratio of indirect taxes to direct taxes)which would maximize the rate of growth of GDP of Taiwan. Efficiency is the core of economics, but the national government’s efficient goal is not as same as the local government’s. Because their goals are not consistent, thus the tax policies are different. Chapter 5 attempts to propose a theoretical model to explain how a national or federal government decides its tax policy in the vertical externalities happening in heterogeneous states.